Question

name the gas envolved when a metal reacts with a ductile acid?

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Answer 1

This indicates that the gas produced is hydrogen. Zinc forms the salt zinc sulfate with sulfuric acid and zinc chloride with hydrochloric acid and releases hydrogen gas in both cases. In general, a metal reacts with an acid to form a salt and releases hydrogen gas

The general equation for a metal reacting with an acid is.

metal + acid → salt + hydrogen

Hydrogen is a colourless, odourless gas. So you may wish to confirm that the gas produced is indeed hydrogen.

In order to do this, run your experiment in a test tube. (E.g fill a small amount of acid, place some metal in, e.g magnesium) and place a bung inside the test tube to trap the gas.

Then, introduce a burning splint to the test tube. If a “Squeaky pop” occurs then you have confirmed that hydrogen is produced.

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Answer 2

I think it's O2 or Co2...
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